Pumping apparatus.



No. 675,326. Patented May 28 l90l. C. DORN & W. G. T. MARCELLUS.

PUMPING APPARATUS.

(Appl e m a s pt 28 1900 (No Model.) 2 Sheets-Sheet I.

' No. 675,326. Patented May 28, I901.

c. DORN & w. e. T. MARCELLUS.

PUMPING APPARATUS.

QApplication filed se c. 28, 1900. (No Model.) 2 Sheets-Sheet 2.

mmim r 2% lllll' I" ill Nita STATES CHRISTIAN DORN AND WVILLIAM GEORGETRUBY MARCELLUS, OF PHILA- DELPHIA, PENNSYLVANIA; SAID DORN ASSIGNOR TOA. G. FROMUTH,

OF SAME PLACE.

PUM PING APPARATUS.

SPEOIFICATIUN forming part of Letters Patent No. 675,326, dated May 28,1901.

Application filed September 28, 1900. Serial No. 31,423. (No modeL Toall whom, it may concern.-

Be it known that we, CHRISTIAN DoRNand WILLIAM GEORGE TRUBY MAROELLUS,citizens of the United States, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Pumping Apparatus for Lubricators and otherPurposes; and we do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in pumps, and while especiallyintended as an improvement in pumps for a lubricator it may be appliedto a great many other uses in which a pump with adjustable delivery isrequired.

Our invention also relates to certain improvements in the lubricatoritself and inits certain combinations and arrangements of parts, whichwill be hereinafter more f uliy described and claimed.

Reference is had to the accompanying drawings, in which we have shown alubricator and attachments fitted with our invention and its attachmentsand in which the same parts are indicated by the same letters throughoutthe several views.

Figure 1 represents a side elevation of the lubricator as detached fromthe engine. Fig. 2 represents a section along the line 2 2 of Fig. 3 andlooking to the right. Fig. 3 represents a section along the line 8 3 ofFig. 2 and looking to the left. Fig. 4 represents a sectional elevationthrough the pump proper. Fig. 5 represents a section along the line 5 5of Fig. 4. Fig. 6 is a detail View of the ratchet-andpawl arrangement,and Fig. 7 is a detail view showing the adjustable gear for the ratchet.

A represents the box or tank holding the oil, provided with a lid A,hinged, as at a, and preferably having a strainer A resting on the boxbeneath the lid to strain the oil when it is poured in.

B represents the pump-body, which consists of the two members B and Bcontaining the cylinder 1) and the delivery passage b respectively.Beneath the cylinder b is an enlarged chamber B spanned bya wire bbeneath which the ball-valve O is provided,which ball-valve normallycloses the passage 5 in the screw-plug B The delivery end of the passage19 is controlled by the ball-valve O, mounted in the chamber 0 below theunion D, which is preferably provided with a milled ring a] forconvenience in assembling the parts. The band D is placed around theupper end of the member 13 and rests on the top of the box, thusassisting in the support of the pump.

Screwed in the upper end of the union D is the cock E, which has apassage therethrough normally delivering oil to the pipe F, by whichsaid oil is carried to the cylinder, boiler, or other part to belubricated. This passage is controlled by means of the plug valve G,mounted in the chamber 6, which chamber is soshaped that if theplug-valve be turned at right angles to the position shown in Fig. 4

the oil will flow through the spout E- and, dropping down upon the plateT, will pass through the opening 25 and return to the tank A. Thepurpose of this cock is to occasionally test the apparatus to seewhether the oil is flowing at the proper rate.

The plate T is preferably integral with the brackets T, in which the camshaft M is bracketed.

H represents the piston-rod, which also serves as a piston and projectsinto the cylinder 19, passing through the gland B and a lock-nut t, thelatter serving to hold the pumpbody up to the plate T. This piston-rodterminates in a quadrilateral yoke having four bars h, terminatingin thecross-head H',which cross-head is screw-threaded to receive the screw K,which screw is locked in the desired position by means of thelocking-nut I. The lower end of the screw is provided with an annular.groove K", into which the screw 70 projects, which screw is mounted inthe plug K, and thus this plug is detachably secured to this screw K.

The cam M projects between the bars h, as shown in Fig. 3, and as itrotates strikes alternately the plug K and the face 72. at the end ofthe piston-rod H. By adjusting the screw K the travel of the piston maybe increased or diminished at will, and thus the length of the stroke ofthe pump may be increased or diminished as desired, thus regulating theamount ofoil or other fluid delivered at each downstroke of the pump. Inorder to still further diminish the amount of oil delivered, we providethe ratchet-and-pawl arrangement shown in the drawings, in which the armP is loosely mounted on the shaft M and is connected, by means of thesliding sleeve P the holder 19 and clamp-screw 19 with a rod connectedto any reciprocating part of the mechanism. This vibrating arm P carriesa pawl P, held to the ratchet Q, by

means of the spring p. This ratchet Q, is fast on the shaft M", asisalso the cam M, and thus as the ratchet moves the cam moves; but theratchet is arranged to move only a few teeth at a time, and therefore ittakes a number of revolutions of the engine to rotate the cam,eachrevolution of which causes the pump to make one downward or deliverystroke. The ratchet is held againstbacklash by means of the spring-pawlU, (see Fig. 6,) pivoted on the pin i on the arm T of the bracket T,which pawl is normally pressed forward by the spring a, fastened to thelug t As an additional means for limiting the travel of the ratchet weprovide the curved plate R, having the shield R projecting over theratchet-teeth, as shown in Figs. 1 and 7, and the pawl P slides backover this shield R, and thus is held out of engagement with the teeth onthe return stroke until it passes clear of the edge of the shield, aswill be readily understood by examining Fig. 1. This shield is adjustedby means of the slide r, which passes over the guide-lugs t and i and isheld in place by means of the guide-screw S and the clamp-screw S.

The operation of the apparatus is as fol= lows: The arm P beingconnected, by means of a rod, wire, or other device, with somereciprocating part of the engine, (not shown,) the ratchet will be givenaslow and adj ustable motion, which will cause the cam M to rotate, andthis cam will move the yoke and piston-rod up and down, the stroke ofthe piston being regulated by means of the screw K. As the piston comesup a partial vacuum will be created in the cylinder 29, lifting thevalve 0 and sucking in oil through the opening 17 The valve 0 duringthis part of the action remains on its seat. As soon as the piston hasreached the final limit of its travel thus the apparatus affordsindependent means for regulating, first, the length of the stroke of thepiston, and hence the delivery or flow of fluid, and, second, the numberof strokes of the piston and the consequent rate of flow of the fluid.

It will be seen from the foregoing that a small regular and gradedsupply of oil may be supplied to the engine or other part to belubricated and that this supply may be tested by means of the cock E andmay be regulated at will by means of the mechanism hereinbe: foredescribed.

A handle Q may be attached to the ratchet Q, to operate the same byhand, as in testing the machine, if required, at which time theconnection at 17 must be released.

While we have described the apparatus as applied to the one specificform of device-'to wit, a lubricator it is not our purpose to confinethe invention to any such specific use; but we claim the invention,broadly, as applicable to pumps of various forms and in dif-' ferentrelations where it is desired to regulate the fiow of a fluid deliveredby a pump. Thus it frequently happens that the motive power for the pumpvaries, as with pumps operated by water-power or Where the steam runsdown and it is desirable to maintain the efficiency of the pump, at thesame time using the reduced poweravailable. Thus instead of pump ingminute quantities of oil, as in a lubricator, the pump may be used topump large quantities of any fluid, and it is our intention to claim ourinvention, broadly, as applicable to any purpose to which it may beadapted.

Having thus described our invention, what we claim, and desire to secureby Letters Patent of the United States, is

1. In a pumping apparatus the combina tion with a cylinder, a piston andpiston-rod traveling in said cylinder, a yoke on said pis ton-rod, a cammounted to turn in said yoke, an adjustable stop in said yoke engagingsaid cam, a ratchet-wheel mounted to turn said cam, a lever having apawl adapted to engage said ratchet wheel, a shield extending betweensaid ratchet-wheel and said pawl, and a curved slot in said shield bymeans of which it may be adjusted, substantially as described.-

2. In a pumping apparatus the combination with a cylinder, a piston andpiston-rod traveling in said cylinder, a yoke on said piston-rod, a cammounted to turn in said yoke, a screw in said yoke, a shoe swiveled onsaid screw and engaging said cam, a lever having a pawl adapted toengage said ratchet-wheel, an adjustable shield extending between saidratchetwheel and pawl, substantially as described.

3. In a pumping apparatus, the combination with a tank, a U-shaped framemounted in said tank, and a pump-cylinder secured in said U-shapedframe, of a plunger traveling in said cylinder, a yoke on said plunger,a shaft mounted in said U-shaped frame and passing through said yoke, acam mounted on said shaft in said yoke, a ratchet-wheel on said shaft, alever also mounted on said shaft, a pawl on said lever engaging saidratchetwheel, a curved shield having a slot therein adjustalolyconnected With said frame, and extending over the teeth on saidratchetwheel, substantially as described.

4. In a pumping apparatus, the combination with a tank, a U-shaped framemounted in said tank, and a pump-cylinder secured in said U-shapedframe, of a plunger traveling in said cylinder, a yoke on said plunger,a shaft mounted in said U-shaped frame and passing through said yoke, acam mounted on said shaft in said yoke, an adjustable stop in said yokeengaging said cam, a ratchetwheel mounted on said shaft, a lever alsoCHRISTIAN DORN. WILLIAM GEORGE TRUBY MARCELLUSA Witnesses:

GEORGE KAUPP, A. P. JORDAN.

